Prediction Market Parlay Calculator

Parlay Odds
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To Win
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What does this calculator do?

The prediction market parlay calculator lets you chain multiple legs together and see the combined payout instantly. Enter legs as prediction‑market prices (default, 0–1 for a $1 payoff) or switch to American odds and we’ll handle the conversions for you. Behind the scenes, each leg is converted to decimal odds, the factors are multiplied, and we return both the overall parlay odds (in American format) and the “to win” amount for your stake.

Use this prediction market parlay calculator when you want to translate exchange quotes into the sportsbook style you’re used to, sanity‑check a multi‑leg idea, or compare “parlayed” pricing to taking legs individually. It’s a fast, transparent way to see how conviction compounds across legs without doing manual math on prices like 0.62, 0.55, and 0.48.

By default, inputs are prediction‑market prices because that’s how exchanges quote contracts. You can toggle to American odds at any time. Either way, the prediction market parlay calculator produces the same combined result — clear parlay odds and a dollar payout based on your bet size.

Frequently Asked Questions

We convert each price p (dollars per $1 payoff) into a decimal factor of 1/p. Multiplying all factors gives the parlay decimal odds. We then convert that to American odds and compute “to win” as stake × (decimal − 1). The interface mirrors this logic in real time.

Parlays implicitly assume legs are independent and simultaneously resolvable. If legs are correlated (e.g., same game outcomes), true combined edge can differ from the simple product of factors. The prediction market parlay calculator shows clean mathematical compounding; you should still assess correlation and execution risk before betting.

Yes. Change the “Odds Input Type” selector to American odds and enter values like +150 or -110. We convert +o to decimal as 1 + o/100 and -o as 1 + 100/|o|, then continue with the same parlay math.

Order does not matter — multiplication is commutative. For “YES” vs “NO”, enter the relevant side’s price: a 0.32 “NO” share on a $1 contract would use p = 0.32. The calculator treats all legs generically as prices or odds; your interpretation should reflect the side you intend to bet.